JPH111663A - Two-part liquid acrylic composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a compsn. which is excellent in sticking and adhesion to ceramic materials by using a polymerizable (meth)acrylic monomer, an org. peroxide, a vanadium compd., and an α-hydroxycarbonyl compd. as the essential ingredients. SOLUTION: A pref. polymerizable (meth)acrylic monomer has at least two (meth)acrylic groups and contains 10-90 wt.% polyfunctional (meth)acrylate monomer having a mol.wt. of 400-4,000. An α-hydroxycarboxylic acid (ester) is pref. as the α-hydroxycarbonyl compd. The compsn. is pref. used in a two-part liq. system: one part contg. the monomer, the peroxide, and the α- hydroxycarbonyl compd. and the other contg. the monomer and the vanadium compd. The compsn. is esp. suitable to be applied to cement-based materials.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a cement-based material such as a cement plate, a slate plate, and concrete, which is conventionally considered to be difficult to bond, and a ceramic industrial product such as ceramic, earthenware, brick, tile, tile, and insulator. The present invention relates to a two-pack type acrylic composition having excellent adhesion and adhesion to ceramic materials.

[0002]

2. Description of the Related Art A two-pack acrylic adhesive in which a polymerization initiator is blended in a component A and a reducing agent that promotes the decomposition of a polymerization initiator in a component B exhibits a predetermined adhesive performance even with a rough measurement. It is widely used in the industrial fields such as electricity, machinery, construction, and vehicles because it can be used, is easy to handle, and can be strongly bonded in a short time at room temperature. This has helped to improve production, save labor, and speed up assembly lines.

[0003] However, two-part acrylic adhesives generally exhibit excellent adhesiveness for bonding hard materials such as metal materials, but when used for bonding specific plastic materials, ceramic materials or wood. However, there are problems that it takes a long time to cure and, in some cases, causes poor curing.

[0004] Under such circumstances, in order to impart excellent adhesiveness to various materials other than metal materials to the two-part acrylic adhesive, (1) a method of performing a specific primer treatment, (2) A method using a specific (meth) acrylic monomer or polymer component, and (3) a method using a specific redox catalyst system are being studied. For example,
(1) As a method of performing a specific primer treatment, an acrylic adhesive asbestos slate plate, brick, wood is applied by previously applying a primer composition obtained by dissolving or dispersing an organic polymer compound in a volatile solvent. Attempts have been made to improve the adhesion to porous materials such as Japanese roof tiles (Japanese Patent Laid-Open No. 5-93172). However,
Although this method has the advantage that the existing acrylic adhesive can be used as it is, it requires a pretreatment of applying and drying a primer on the surface of the adherend prior to bonding, and it is practically a three-part adhesive. It could be said to be an agent and had a major problem in workability.

[0005] (2) As a method of using a specific (meth) acrylic monomer or polymer component, a product obtained by graft polymerization of a specific alkyl acrylate to a diene rubber polymer and a vinyl compound are used. Alternatively, a composition for an adhesive containing a vinylidene monomer as a main component (Japanese Patent Application Laid-Open
-124939 and JP-A-50-124940
Publication), and (1) benzyl (meth) acrylate,
(2) a (meth) acrylic monomer having a functional group selected from a hydroxyl group, a carboxyl group, and a glycidyl group; and (3) an epichlorohydrin rubber, a diene rubber, a urethane rubber, an acrylic rubber, and an ASA resin. An acrylic adhesive composition comprising a polymer (JP-A-51-121339), or (A) an alkyl acrylate, an alkyl methacrylate,
At least one selected from acrylic acid and methacrylic acid, (B) a copolymerized elastomer of butadiene or / and / or isoprene and an unsaturated nitrile, and more than 5% by weight of a functional monomer, (C) an organic peroxide, A,
The composition containing B and C as essential components and cured in the presence of (C) an organic peroxide decomposition accelerator, or cured by heating the composition itself containing A, B and C as essential components. Adhesive composition characterized in that
No. 32870) has been proposed.

[0006] However, although the adhesives according to the above methods can provide excellent adhesiveness to various plastics and woods in addition to various metallic materials, cement-based materials and ceramic products can be used. Adhesion to ceramics-based materials such as those described above was still insufficient.

Further, (3) a method of applying a specific redox catalyst system includes a method in which a main agent mainly composed of a polymerizable (meth) acrylic monomer and an organic peroxide, a condensate of an aldehyde and an amine, and a soluble vanadium compound are used. A main agent-primer type acrylic adhesive comprising a primer as a main component, wherein at least one of the main agent and the primer contains one or more acidic compounds selected from an acidic phosphorus compound, an organic carboxylic acid and an organic sulfonic acid (Japanese Patent Application Laid-Open No. Hei 6 -809
No. 37) is reported to exhibit excellent adhesion performance not only to metal materials but also to Lauan plywood, asbestos slate board, polystyrene and the like.

However, this adhesive composition is applicable only to the main agent-primer type acrylic adhesive because it contains a condensate of an aldehyde and an amine as an essential component, and is suitable for bonding work using an automatic coating machine or the like. It was impossible to apply to a two-component main agent type acrylic adhesive. Therefore, for example, in the application of a wide variety of materials such as wood-based materials, such as the building field, synthetic resins, ceramic materials, and the like as adherends, although there is a problem in workability and adhesion speed, In reality, the only choice is to use an epoxy resin adhesive or a urethane-based adhesive that has no selectivity for the adherend.

[0009]

DISCLOSURE OF THE INVENTION The present invention has excellent adhesiveness and adhesiveness to ceramic materials, and can be used for ceramic materials or ceramic materials and wood materials, metals, synthetic resins, etc. An object of the present invention is to provide a two-pack acrylic composition suitable for bonding with a material and coating, painting, repairing or filling a ceramic material.

[0010]

Means for Solving the Problems The inventors of the present invention have conducted intensive studies to solve the above-mentioned problems, and as a result, have found that a two-pack type acrylic adhesive using an organic peroxide and a vanadium compound as a redox catalyst system has been developed. The present inventors have found that a composition exhibiting excellent adhesion and adhesion to ceramic materials can be obtained when an α-hydroxycarbonyl compound is allowed to coexist, and have reached the present invention.

That is, the present invention firstly provides a polymerizable (meth)
Two-component acrylic adhesive for ceramics-based materials, which contains an acrylic monomer, an organic peroxide, a vanadium compound and an α-hydroxycarbonyl compound (preferably α-hydroxycarboxylic acid or α-hydroxycarboxylic acid ester) as essential components. Second, the ceramic material is the two-component acrylic composition, which is a cement-based material such as a cement plate, a slate plate, or concrete. Third, a polymerizable (meth) acrylic monomer is Having two or more (meth) acryl groups in the molecule and having a molecular weight of 400 to 4.0
The polyfunctional (meth) acrylic monomer which is
The two-component acrylic composition for adhering ceramic-based materials containing 90 wt%, and fourthly, the agent A comprises a polymerizable (meth) acrylic monomer, an organic peroxide, and an α-hydroxycarbonyl compound; The agent is a two-component acrylic composition for bonding ceramic materials, which comprises a polymerizable (meth) acrylic monomer and a vanadium compound. Fifth, the two-component acrylic composition is used for bonding ceramic materials to each other or ceramic materials. It is intended for use as an adhesive between a material and another adherend or as a coating, painting, repair or filling of ceramic materials.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in more detail.

First, the ceramic material in the present invention is, as described above, a cement board, an asbestos slate board, a wool cement board, a concrete construction, a cement-based material using other cement as a raw material, a plaster, a plaster, or a porcelain. , Pottery, bricks, tiles, tiles, insulators, ceramics, and other ceramic products, and is particularly used in a large amount in each field and has poor adhesion to cement boards and slate boards (including asbestos slate boards). ), It is preferably applied to cement-based materials such as concrete.

The polymerizable (meth) acrylic monomer used in the present invention includes (meth) acrylic acid, methyl (meth) acrylate, ethyl (meth) acrylate, n-
Propyl (meth) acrylate, isopropyl (meth)
Acrylate, n-butyl (meth) acrylate, isobutyl (meth) acrylate, sec-butyl (meth)
Acrylate, t-butyl (meth) acrylate, 2-
Ethylhexyl (meth) acrylate, lauryl (meth) acrylate, stearyl (meth) acrylate,
Tridecyl (meth) acrylate, phenyl (meth) acrylate, benzyl (meth) acrylate, cyclohexyl (meth) acrylate, tetrahydrofurfuryl (meth) acrylate, isobornyl (meth) acrylate, dicyclopentenyl (meth) acrylate, hydroxyethyl (meth) ) Acrylate, hydroxypropyl (meth) acrylate, 2-hydroxy-3-phenoxypropyl (meth) acrylate, 3-chloro-2-
Hydroxypropyl (meth) acrylate, glycerin mono (meth) acrylate, glycidyl (meth) acrylate, methoxyethyl (meth) acrylate, ethoxyethyl (meth) acrylate, butoxyethyl (meth) acrylate, phenoxyethyl (meth) acrylate, dicyclo Pentenyloxyethyl (meth) acrylate, methoxypolyethylene glycol (meth) acrylate, phenoxypolyethylene glycol (meth)
Monofunctional polymerizable (meth) acrylic represented by acrylate, nonylphenoxy polyethylene glycol (meth) acrylate, β- (meth) acryloyloxyethyl hydrogen phthalate, β- (meth) acryloyloxyethyl hydrogen succinate, etc. Monomers, ethylene glycol di (meth) acrylate, diethylene glycol di (meth) acrylate, tripropylene glycol di (meth) acrylate, 1,4-butanediol di (meth) acrylate, 1,6-hexanediol di (meth) acrylate, Neopentyl glycol di (meth) acrylate, glycerin di (meth) acrylate, (meth) acrylate of alkylene oxide adduct of bisphenol A, polyethylene glycol di (meth) Acrylate, polypropylene glycol di (meth) acrylate, trimethylolpropane tri (meth) acrylate, pentaerythritol tri (meth) acrylate, glycerin tri (meth) acrylate, tetramethylolmethane tri (meth) acrylate, tris-2-hydroxyethyl isocyanate Tri (meth) acrylate, pentaerythritol tetra (meth) acrylate, ditrimethylolpropane tetra (meth) acrylate, tetramethylolmethanetetra (meth) acrylate, dipentaerythritol hexa (meth) acrylate, urethane (meth) acrylate, polyester (meth) ) Polyfunctional (meth) acrylic monomers such as acrylates and epoxy (meth) acrylates can be used without any particular restrictions. Possible, considering the working environment and inflammable like odor like a boiling point of 120
It is preferable to employ a polymerizable (meth) acrylate having a temperature of not lower than ° C.

In order to further improve the adhesion to ceramic materials, a polyfunctional (meth) acrylate having at least two (meth) acryl groups in the molecule and having a molecular weight of 400 to 4,000 is preferred. It is preferable that the monomer is contained in an amount of 10 to 90 wt% in the entire polymerizable (meth) acrylic monomer.

As the polyfunctional (meth) acrylic monomer satisfying the above conditions, urethane (meth) acrylate (for example, trade name “Nisso” manufactured by Nippon Soda Co., Ltd.)
PBTE-2000 ", trade name" UV-7000B "manufactured by Nippon Synthetic Chemical Industry Co., Ltd.), polyester (meth) acrylate, epoxy (meth) acrylate,
(For example, "3000" manufactured by Kyoeisha Chemical Co., Ltd.
M ") and the like, and a glucidyl methacrylate adduct of a butadiene-acrylonitrile copolymer modified with a terminal carboxyl group (for example, trade name“ VTBNX manufactured by Ube Industries, Ltd.)
1300X33 "), polyalkylene glycol di (meth) acrylate, (meth) acrylic acid ester of an alkylene oxide adduct of bisphenol A (for example,
Product name "NK Ester B" manufactured by Shin-Nakamura Chemical Co., Ltd.
PE100 ") and the like are preferably used.

Examples of the organic peroxides include hydroperoxides such as t-butyl hydroperoxide, p-menthane hydroperoxide, cumene hydroperoxide, diisopropylbenzene hydroperoxide, and t-butyl peroxylaurate. , T-
Peroxyesters such as butyl peroxybenzoate and t-butyl peroxide decanoate can be used alone or in combination of two or more. Hydroperoxides are particularly preferred. The amount of the organic peroxide is preferably 1 to 10 parts by weight, more preferably 2 to 10 parts by weight, based on 100 parts by weight of the polymerizable (meth) acrylic monomer.
5 parts by weight is more preferred. If the amount of the organic peroxide is less than 1 part by weight, the curing rate is decreased, which is not preferable. If the amount is more than 10 parts by weight, the storage stability of the composition is deteriorated, which is not preferable.

Further, as the vanadium compound, vanadyl acetylacetonate, vanadyl stearate,
Vanadium naphthenate, vanadium acetylacetonate, vanadium benzoylacetonate and the like can be mentioned. The compounding amount of the vanadium compound is preferably from 0.1 to 10 parts by weight, and more preferably from 1 to 5 parts by weight, based on 100 parts by weight of the polymerizable (meth) acrylic monomer. If the compounding amount of the vanadium compound is less than 0.1 part by weight, the curing rate is low, so that it is not preferable. When coexisting with a (meth) acrylic monomer, the storage stability is undesirably reduced.

Examples of the α-hydroxycarbonyl compound include α-hydroxycarboxylic acids such as lactic acid, tartaric acid, malic acid, glycolic acid and citric acid; α-hydroxycarboxylic acid esters such as methyl lactate, ethyl lactate and ethyl glycolate; Examples of α-ketols such as hydroxyacetone, dihydroxyacetone, acetoin, and benzoin include α-ketols.If α-ketol is used, it is liable to deteriorate when exposed to light during storage, so that α-ketols are used as α-hydroxycarbonyl compounds. Hydroxycarboxylic acid or α-
It is particularly preferred to use hydroxycarboxylic esters. The amount of the α-hydroxycarbonyl compound is preferably 0.1 to 5 parts by weight, more preferably 0.5 to 3 parts by weight, per 100 parts by weight of the polymerizable (meth) acrylic monomer.
Parts by weight are more preferred. If the blending amount of the α-hydroxycarbonyl compound is less than 0.1 part by weight, the improvement in adhesiveness is not remarkable because it is not remarkable. I can't. In addition,
When a vanadium compound is present in a system in which a polymerizable (meth) acrylic monomer and an α-hydroxycarbonyl compound are present, storage stability tends to decrease. Therefore, it is preferable to add an organic peroxide to the system.

In the present invention, it is preferable to add an acidic phosphate ester in order to improve the storage stability and adhesiveness of the composition. As acidic phosphate esters,
For example, monomethyl phosphate, dimethyl phosphate, monoethyl phosphate, diethyl phosphate, monobutyl phosphate, dibutyl phosphate, mono-β-chloroethyl phosphate, di-phosphate
β-chloroethyl phosphate, monoethoxyethyl phosphate, diethoxyethyl phosphate, phenyl phosphate, diphenyl phosphate, mono (meth) acryloyloxyethyl phosphate,
Di (meth) acryloyloxyethyl phosphate,
Mono (meth) acryloyloxypropyl phosphate, di (meth) acryloyloxypropyl phosphate, polypropylene glycol mono (meth) acrylate phosphate and the like can be mentioned.

In addition, polymethyl methacrylate, polyvinyl butyral, acrylonitrile-styrene copolymer (AS resin), acrylonitrile-butadiene-styrene copolymer (ABS resin) are used for the purpose of adjusting the viscosity and improving the flexibility of the cured product. ), Thermoplastic resins such as methacrylate-butadiene-styrene copolymer (MBS resin), methacrylate-butadiene-acrylonitrile-styrene copolymer (MBAS resin), styrene-butadiene rubber (SBR), polybutadiene rubber ( BR), polyisoprene rubber (IR),
Chloroprene rubber (CR), nitrile rubber (NBR),
Rubbers such as chlorinated rubber, acrylic rubber and epichlorohydrin rubber, liquid rubbers such as liquid polybutadiene, liquid polybutadiene modified with terminal acryl, liquid acrylonitrile-butadiene copolymer, fine powdered polyethylene, dibenzylidene-D for the purpose of imparting thixotropic properties -Sorbitol, cellulose triacetate, stearamide,
Thixotropic agents such as bentonite and finely divided silica, and 2,6-di-t for improving long-term storage stability at room temperature.
-Butyl-4-methylphenol, 2,2-methylenebis (4-methyl-6-t-butylphenol), benzoquinone, hydroquinone, quinhydrone, ethylenediaminetetraacetic acid tetrasodium, oxalic acid, N-methyl-N-
Of course, it is also possible to mix radical polymerization inhibitors such as nitrosoaniline and N-nitrosodiphenylamine, and dyes and pigments for coloring.

In the present invention, the composition is divided into two parts, an A agent and a B agent, and one (A agent) is provided with an organic peroxide as a polymerization initiator, and the other (B agent) is provided with an organic peroxide. The present invention relates to a two-pack type acrylic composition in which a vanadium compound acting as a reducing agent for accelerating the decomposition of a substance is blended, and an organic peroxide and a vanadium compound are configured not to coexist in the same container, and The above-mentioned polymerizable (meth) acrylic monomer, organic peroxide, vanadium compound and α-hydroxycarbonyl compound are essential components, and the above-mentioned various components are blended as required.

In the composition of the present invention, any of a two-pack main agent type and a main agent-primer type agent commonly known as an adhesive can be used. Is preferable because it can make the flow characteristics and the use amount of the agent A and the agent B similar to each other, and has an effect that an automatic coating and a coating machine can be used.
The composition of the other components of the A agent and the B agent of the composition of the present invention naturally depends on whether the composition is a two-pack main agent type or a main agent-primer type.

For example, in the case of the two-pack main agent type, both the A agent and the B agent contain a polymerizable (meth) acrylate. Needs to be provided with sufficient storage stability. Therefore, it is preferable to mix the polymerizable (meth) acrylic monomer, the organic peroxide and the α-hydroxycarbonyl compound with the agent A, and to mix the polymerizable (meth) acrylic monomer and the vanadium compound with the agent B. Furthermore, it is more preferable to mix an acidic phosphate ester with the A agent and the B agent for the purpose of improving the storage stability. The compounding amount of the acidic phosphoric acid ester is preferably 0.01 to 5 parts by weight, more preferably 0.05 to 2 parts by weight, based on 100 parts by weight of the polymerizable (meth) acrylic monomer.
Further, the amount of the B agent is preferably 0.1 to 20 parts by weight, more preferably 0.5 to 10 parts by weight, based on 100 parts by weight of the polymerizable (meth) acrylic monomer.

On the other hand, when the main agent-primer type is used,
(1) A polymerizable (meth) acrylic monomer, a polymerization initiator and an α-hydroxycarbonyl compound are blended in the A agent,
Combination of blending an inert solvent and a vanadium compound with Agent B, (2) blending a polymerizable (meth) acrylic monomer and a polymerization initiator with Agent A, and blending an inert solvent, a vanadium compound and α-hydroxycarbonyl with Agent B A combination in which a compound is blended, or (3) an inert solvent, a polymerization initiator and an α-hydroxycarbonyl compound are blended in the agent A,
A combination in which a polymerizable (meth) acrylic monomer and a vanadium compound are blended in the agent is preferable.

[0026]

The two-part acrylic composition of the present invention has remarkably improved adhesion and adhesion to ceramic materials which are conventionally considered difficult to adhere. This is how redox polymerization catalyst systems consisting of organic peroxides and vanadium compounds
-Hydroxycarbonyl compound acts to accelerate the decomposition of organic peroxide, so its polymerization activity is less affected by air and other radical polymerization inhibitors contained by the poorly adherent porous inorganic material. It is thought that it is caused by doing.

[0027]

Next, the present invention will be described in more detail with reference to Examples and Comparative Examples. In these examples, all parts are by weight. In carrying out the operation, the raw materials shown in Tables 1 to 3 were used.

[0028]

[Table 1]

[0029]

[Table 2]

[0030]

[Table 3]

The adhesive performance was evaluated by measuring the following method.

<Set time> In a constant temperature and humidity room at 23 ° C. and 50% RH, a cold rolled steel sheet having a shape of 1.6 × 25 × 100 mm is mixed in equal amounts with the A agent and the B agent with a 12 mm wrap. The time required for the film to adhere and not to be peeled off even when a load of 5 kgf is applied is measured.

<Tensile shear strength> In a constant temperature and humidity room at 23 ° C and 50% RH, an adherend having a shape of
Agent and B agent, apply thinly on one adherend, then
The other adherend is rubbed together with a wrap length of 12 mm and fixed. After curing for 24 hours, AS
It measured based on TMD1002-64.

Examples 1 and 2 and Comparative Examples 1 and 2 Two-part acrylic compositions having the compositions shown in Table 4 were prepared. Next, the same amount of the A agent and the B agent were mixed, the asbestos slate plate was adhered, and the tensile shear strength was measured. As a result, α
-Hydroxycarbonyl compound glycolic acid (A
While the compositions of Examples 1 and 2 to which 1) was added exhibited excellent adhesion to the asbestos slate board, the compositions of Comparative Examples 1 and 2 to which no glycolic acid was added were used. Was not suitable for bonding. Table 4 also shows the results
Shown in

[0035]

[Table 4]

Example 3 and Comparative Example 3 A two-part acrylic composition having the composition shown in Table 5 was prepared in order to confirm the effect of the presence or absence of the α-hydroxycarbonyl compound on the material of the adherend. Next, the set time was measured by mixing equal amounts of the A agent and the B agent, and at the same time, the tensile shear strength of the steel plate, the plywood, the asbestos slate plate, the back surface of the tile, and the calcical plate was measured. As a result, it can be seen that the composition of the present invention exhibits excellent adhesiveness to ceramic materials and also exhibits excellent adhesiveness to steel plates and plywood, so that it can be suitably used in the field of construction. Table 5 shows the results.

[0037]

[Table 5]

Examples 4 to 10 The compositions of the present invention having the compositions shown in Table 6 were prepared for the purpose of examining the effect of the polymerizable (meth) acrylic monomer on the adhesiveness. Then A
An equal amount of the agent and the agent B were mixed, and the set time was measured. At the same time, a steel plate, a plywood, and an asbestos slate plate were bonded, and the tensile shear strength was measured. As a result, the compositions of Examples 4 to 7 partially using a polyfunctional (meth) acrylic monomer were used in Example 8 comprising only a monofunctional polymerizable acrylic monomer.
As compared with the compositions of Nos. 10 to 10, the adhesiveness to ceramic materials was excellent. The results are also shown in Table 6.

[0039]

[Table 6]

[0040]

As described above, the two-part acrylic composition of the present invention has excellent adhesiveness and adhesion to ceramic materials, so that it can be used for bonding ceramic materials or coating and painting ceramic materials. Alternatively, it can be suitably used for repair and filling. Further, the two-part acrylic composition of the present invention has excellent adhesiveness to steel plates and plywood, and thus can be used not only for ceramic materials, but also for bonding ceramic materials with wood and metals. Therefore, it can be suitably used in a wide range of fields such as electric machines, machines, and construction. In particular, metals such as wood-based materials, such as in the construction field,
It is extremely suitable for bonding applications using a wide variety of materials such as synthetic resins and ceramic materials as adherends.

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification code FI C09J 11/06 C09J 11/06 133/06 133/06 (72) Inventor Matsuda ▲ Hide ▼ Akira 1515 Nakatsucho, Marugame-shi, Kagawa Prefecture Okura Industrial Co., Ltd.

Claims (7)

[Claims] 1. A two-pack acrylic composition for bonding ceramic materials, comprising a polymerizable (meth) acrylic monomer, an organic peroxide, a vanadium compound and an α-hydroxycarbonyl compound as essential components. 2. The method according to claim 1, wherein the α-hydroxycarbonyl compound is α-hydroxycarbonyl compound.
2. One or more selected from the group consisting of hydroxycarboxylic acids and α-hydroxycarboxylic acid esters.
The two-part acrylic composition according to the above. 3. The ceramic material according to claim 1, wherein the ceramic material is a cement-based material such as a cement board, a slate board, or concrete.
The two-part acrylic composition according to the above. 4. A polymerizable (meth) acrylic monomer having two or more (meth) acrylic groups in a molecule and a polyfunctional (meth) acrylic monomer having a molecular weight of 400 to 4,000. The two-part acrylic composition according to any one of claims 1 to 3, wherein the two-part acrylic composition is contained at 90 wt%. 5. A ceramic material adhesive wherein the A agent comprises a polymerizable (meth) acrylic monomer, an organic peroxide and an α-hydroxycarbonyl compound, and the B agent comprises a polymerizable (meth) acrylic monomer and a vanadium compound. Two-part acrylic composition for use. 6. Use of the two-component acrylic composition according to any one of claims 1 to 5 as an adhesive between ceramic materials or between a ceramic material and another adherend. 7. A method of coating and painting a ceramic material using the two-part acrylic composition according to claim 1.
Use for repair or filling.